Desperately seeking...: Black holes

Webb talks about black holes. Black holes are objects so dense and so massive that nothing--not even the light by which humans might see them--can escape their gravity. The detection of a gravitational wave apparently rippling out from the merger of two relatively small black holes is the latest circumstantial evidence that they are more than a theoretical pipe-dream. Black holes throw up glaring paradoxes between general relativity and quantum theory the two bedrocks on which humans' understanding of physical reality perches. Models indicate that black holes must slowly evaporate to nothing overtime, bleeding out an emission known as Hawking radiation.